·432·
Programming manual
CNC 8055
CNC 8055i
15.
COORDINATE TRANSFORMATION
·M· & ·EN· MODELS
SOFT: V02.2X
Movement in an inclined plane
15.1.4 Considerations about the G49 function
G49 cannot be programmed in the following instances:
• At the GP model CNC
• From the PLC channel (although it can be programmed from the user channel).
• Within a profile definition for pockets or other cycles.
In order to work with coordinate transformation (G49), the X, Y, Z axes must be defined, they must
form the active trihedron and be linear. The X, Y and Z axes may have GANTRY axes, coupled or
synchronized via PLC, associated with them.
When working with coordinate transformation and performing rigid tapping in inclined planes, all
axes gains (not only for the Z axis) must be adjusted by using the second gains and accelerations.
The parameters associated with G49 are optional. When programming G49 without parameters,
the active coordinate transformation is canceled.
G49 is modal and no more G codes may be programmed alone in the block.
Coordinate transformation is kept active even after turning the CNC off and back on.
To cancel it, program the following:
G49 E1 it cancels it, but it keeps the part zero defined in the transformation.
G49 E0 ó G49 It cancels it and it recovers the part zero that was active before the G49
was activated.
G74 It cancels it, it activates the home search and recovers the part zero that
was active before the G49 was activated.
Zero offsets G54-G59, pattern rotation (G73) and presets (G92, G93) are possible while coordinate
transformation is active.
But the following cannot be done:
• Program a new coordinate transformation without previously canceling the previous one.
• Probing (G75).
• Movement against hardstop (G52).
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